Noise reduction back cover for computer devices
US6198627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1998 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A back cover assembly is provided for use in a device including a housing having a plurality of walls forming an enclosure. A blower mechanism is adapted to cause exhaust air to flow from an interior of the housing to an exterior of the housing. The back cover assembly is located in proximity with the blower mechanism, and includes an acoustical chamber adapted to permit exhaust air from the interior of the housing to pass therethrough. The acoustical chamber is adapted and constructed to reflect acoustical energy back into the blower mechanism. In an embodiment, at least one interior surface of the acoustical chamber is lined with a sound absorbing material such as polyurethane polyester foam. The acoustical chamber can include a front wall with at least one inlet open to blower mechanism, and a rear wall with at least one outlet. The outlet is in fluid communication with the at least one inlet on the front wall, and is open to the exterior of the housing. In order to provide the necessary acoustical reflectivity, the at least one inlet and the at least one outlet can be placed out of axial alignment with one another. For instance, where the at least one inlet is located at a top …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.